1. Cook rice according to directions.
2. While rice cooks, combine 1 tablespoon sherry, 1 tablespoon soy sauce, sugar, and beef. Stir together 1 tablespoon sherry, 1 tablespoon soy sauce, broth, cornstarch, hoisin, and Sriracha.
3. Heat 1 tablespoon oil in a large skillet over medium-high heat. Add beef mixture; sauté 3 minutes or until browned. Remove beef from pan. Add remaining 1 tablespoon oil to pan. Add ginger and garlic; cook 30 seconds, stirring constantly. Add broccoli and 1/4 cup water; cook 1 minute. Add onions; cook 1 minute, stirring constantly. Add broth mixture and beef mixture; cook 2 minutes or until beef is thoroughly heated and sauce is slightly thick. Serve beef mixture over rice.